| From: | "Peter Kovacs" <peter(dot)kovacs(dot)1(dot)0rc(at)gmail(dot)com> |
|---|---|
| To: | "Kevin Grittner" <Kevin(dot)Grittner(at)wicourts(dot)gov> |
| Cc: | "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us>, pgsql-hackers(at)postgresql(dot)org, pgsql-performance(at)postgresql(dot)org, "Andrea Olson" <Aolson(dot)CCAP(dot)Courts(at)wicourts(dot)gov>, "Bill Severson" <BSEVERS(dot)CCAP(dot)Courts(at)wicourts(dot)gov>, "John Hutchins" <jhutchi(dot)CCAP(dot)Courts(at)wicourts(dot)gov>, "Randy Peterson" <RPETERS(dot)CCAP(dot)Courts(at)wicourts(dot)gov>, "Shannon Spranger" <ssprang(dot)CCAP(dot)Courts(at)wicourts(dot)gov> |
| Subject: | Re: [PERFORM] EXISTS optimization |
| Date: | 2007-03-23 23:04:44 |
| Message-ID: | b6e8f2e80703231604v72b9dc4dr51eebd62274d53ec@mail.gmail.com |
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| Lists: | pgsql-hackers pgsql-performance |
On 3/23/07, Kevin Grittner <Kevin(dot)Grittner(at)wicourts(dot)gov> wrote:
[...]
> That's the good news. The bad news is that I operate under a management portability dictate which doesn't currently allow that syntax, since not all of the products they want to
It doesn't really touch the substance, but I am curious: are you not
even allowed to discriminate between products in your code like:
if db is 'postresql' then
...
else
...
?
What would be the rationale for that?
Thanks
Peter
cover support it. I tried something which seems equivalent, but it is
running for a very long time. I'll show it with just the explain
while I wait to see how long the explain analyze takes.
>
[...]
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